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Joerg Roedel 582f799335 x86/sev: Check for user-space IOIO pointing to kernel space 
Upstream commit: 63e44bc52047f182601e7817da969a105aa1f721

Check the memory operand of INS/OUTS before emulating the instruction.
The #VC exception can get raised from user-space, but the memory operand
can be manipulated to access kernel memory before the emulation actually
begins and after the exception handler has run.

  [ bp: Massage commit message. ]

Fixes: 597cfe48212a ("x86/boot/compressed/64: Setup a GHCB-based VC Exception handler")
Reported-by: Tom Dohrmann <erbse.13@gmx.de>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Cc: <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-10-25 11:58:55 +02:00
..
acpi
x86: ACPI: cstate: Optimize C3 entry on AMD CPUs
2023-02-01 08:27:19 +01:00
apic
x86/apic: Fix kernel panic when booting with intremap=off and x2apic_phys
2023-06-28 10:29:53 +02:00
cpu
x86/cpu: Fix AMD erratum #1485 on Zen4-based CPUs
2023-10-19 23:05:36 +02:00
fpu
x86/fpu: Set X86_FEATURE_OSXSAVE feature after enabling OSXSAVE in CR4
2023-08-30 16:18:19 +02:00
kprobes
x86/kprobes: Fix arch_check_optimized_kprobe check within optimized_kprobe range
2023-03-10 09:40:01 +01:00
.gitignore
…
alternative.c
x86/alternatives: Disable KASAN in apply_alternatives()
2023-10-19 23:05:37 +02:00
amd_gart_64.c
x86/amd_gart: don't set failed sg dma_address to DMA_MAPPING_ERROR
2021-08-09 17:13:06 +02:00
amd_nb.c
hwmon: (k10temp) Add support for yellow carp
2021-08-27 13:54:58 -07:00
aperture_64.c
memblock: make memblock_find_in_range method private
2021-09-03 09:58:17 -07:00
apm_32.c
x86/APM: drop the duplicate APM_MINOR_DEV macro
2023-09-19 12:22:45 +02:00
asm-offsets_32.c
x86/stackprotector/32: Make the canary into a regular percpu variable
2021-03-08 13:19:05 +01:00
asm-offsets_64.c
x86/xen: Drop USERGS_SYSRET64 paravirt call
2021-02-10 12:32:07 +01:00
asm-offsets.c
x86/paravirt: Switch iret pvops to ALTERNATIVE
2021-03-11 19:58:54 +01:00
audit_64.c
…
bootflag.c
…
cc_platform.c
x86/sev: Add an x86 version of cc_platform_has()
2021-11-18 19:17:21 +01:00
check.c
…
cpuid.c
…
crash_core_32.c
…
crash_core_64.c
…
crash_dump_32.c
…
crash_dump_64.c
…
crash.c
x86/crash: Disable virt in core NMI crash handler to avoid double shootdown
2023-03-10 09:40:01 +01:00
devicetree.c
…
doublefault_32.c
x86/stackprotector/32: Make the canary into a regular percpu variable
2021-03-08 13:19:05 +01:00
dumpstack_32.c
…
dumpstack_64.c
x86/mm/64: Improve stack overflow warnings
2021-11-18 19:16:10 +01:00
dumpstack.c
x86/show_trace_log_lvl: Ensure stack pointer is aligned, again
2023-05-30 13:55:32 +01:00
e820.c
x86/boot: Fix memremap of setup_indirect structures
2022-03-16 14:23:45 +01:00
early_printk.c
…
early-quirks.c
x86/gpu: Reserve stolen memory for first integrated Intel GPU
2022-01-27 11:02:51 +01:00
ebda.c
…
eisa.c
…
espfix_64.c
…
ftrace_32.S
x86: Prepare asm files for straight-line-speculation
2022-05-15 20:18:49 +02:00
ftrace_64.S
x86/ibt,ftrace: Make function-graph play nice
2022-08-21 15:17:48 +02:00
ftrace.c
ftrace/x86: Add back ftrace_expected for ftrace bug reports
2023-01-12 11:58:54 +01:00
head32.c
…
head64.c
x86: Clear .brk area at early boot
2022-07-21 21:24:40 +02:00
head_32.S
x86/asm/32: Fix ANNOTATE_UNRET_SAFE use on 32-bit
2022-07-23 12:54:12 +02:00
head_64.S
objtool: Add entry UNRET validation
2022-07-23 12:54:06 +02:00
hpet.c
rtc: Check return value from mc146818_get_time()
2022-04-13 20:59:14 +02:00
hw_breakpoint.c
x86/debug: Prevent data breakpoints on cpu_dr7
2021-02-05 20:13:12 +01:00
i8237.c
…
i8253.c
…
i8259.c
x86/i8259: Mark legacy PIC interrupts with IRQ_LEVEL
2023-02-01 08:27:30 +01:00
idt.c
X86 interrupt related changes:
2021-06-29 12:36:59 -07:00
io_delay.c
…
ioport.c
…
irq_32.c
softirq: Move do_softirq_own_stack() to generic asm header
2021-02-10 23:34:16 +01:00
irq_64.c
x86/softirq/64: Inline do_softirq_own_stack()
2021-02-10 23:34:17 +01:00
irq_work.c
…
irq.c
x86/irq: Ensure PI wakeup handler is unregistered before module unload
2021-11-18 19:15:56 +01:00
irqflags.S
x86: Prepare asm files for straight-line-speculation
2022-05-15 20:18:49 +02:00
irqinit.c
x86/i8259: Mark legacy PIC interrupts with IRQ_LEVEL
2023-02-01 08:27:30 +01:00
itmt.c
…
jailhouse.c
…
jump_label.c
jump_labels: Mark __jump_label_transform() as __always_inlined to work around aggressive compiler un-inlining
2021-07-13 06:32:05 +02:00
kdebugfs.c
x86/boot: Fix memremap of setup_indirect structures
2022-03-16 14:23:45 +01:00
kexec-bzimage64.c
x86: Use ELF fields defined in 'struct kimage'
2021-03-08 12:06:29 -07:00
kgdb.c
x86: Fix various typos in comments
2021-03-18 15:31:53 +01:00
ksysfs.c
x86/boot: Fix memremap of setup_indirect structures
2022-03-16 14:23:45 +01:00
kvm.c
x86, kvm: use proper ASM macros for kvm_vcpu_is_preempted
2022-07-02 16:41:12 +02:00
kvmclock.c
x86/kvmclock: Move this_cpu_pvti into kvmclock.h
2021-09-30 04:08:01 -04:00
ldt.c
memcg: enable accounting for ldt_struct objects
2021-09-03 09:58:13 -07:00
machine_kexec_32.c
x86/kexec: Set_[gi]dt() -> native_[gi]dt_invalidate() in machine_kexec_*.c
2021-05-21 12:36:45 +02:00
machine_kexec_64.c
x86/kexec: fix memory leak of elf header buffer
2022-06-09 10:22:29 +02:00
Makefile
x86/sev: Add an x86 version of cc_platform_has()
2021-11-18 19:17:21 +01:00
mmconf-fam10h_64.c
x86/msr: Rename MSR_K8_SYSCFG to MSR_AMD64_SYSCFG
2021-05-10 07:51:38 +02:00
module.c
x86: Undo return-thunk damage
2022-07-23 12:53:58 +02:00
mpparse.c
x86: Avoid magic number with ELCR register accesses
2021-08-10 23:31:43 +02:00
msr.c
x86/MSR: Filter MSR writes through X86_IOC_WRMSR_REGS ioctl too
2021-01-27 19:06:47 +01:00
nmi_selftest.c
…
nmi.c
x86/sev-es: Rename sev-es.{ch} to sev.{ch}
2021-05-10 07:40:27 +02:00
paravirt-spinlocks.c
x86/paravirt: Add new features for paravirt patching
2021-03-11 19:51:49 +01:00
paravirt.c
x86: Prepare inline-asm for straight-line-speculation
2022-05-15 20:18:50 +02:00
pci-dma.c
…
pci-iommu_table.c
…
pci-swiotlb.c
…
pcspeaker.c
…
perf_regs.c
…
platform-quirks.c
…
pmem.c
x86/pmem: Fix platform-device leak in error path
2022-08-17 14:23:07 +02:00
probe_roms.c
…
process_32.c
x86/resctl: fix scheduler confusion with 'current'
2023-03-11 13:57:39 +01:00
process_64.c
x86/resctl: fix scheduler confusion with 'current'
2023-03-11 13:57:39 +01:00
process.c
x86: Mark stop_this_cpu() __noreturn
2023-03-10 09:39:12 +01:00
process.h
…
ptrace.c
x86/ptrace: Fix xfpregs_set()'s incorrect xmm clearing
2022-03-02 11:47:47 +01:00
pvclock.c
x86: Fix various typos in comments
2021-03-18 15:31:53 +01:00
quirks.c
…
reboot_fixups_32.c
…
reboot.c
x86/reboot: Disable virtualization in an emergency if SVM is supported
2023-03-10 09:40:01 +01:00
relocate_kernel_32.S
x86/kexec: Disable RET on kexec
2022-07-23 12:54:11 +02:00
relocate_kernel_64.S
x86/kexec: Disable RET on kexec
2022-07-23 12:54:11 +02:00
resource.c
…
rtc.c
…
setup_percpu.c
memblock: introduce saner 'memblock_free_ptr()' interface
2021-09-14 13:23:22 -07:00
setup.c
x86/boot: Fix memremap of setup_indirect structures
2022-03-16 14:23:45 +01:00
sev_verify_cbit.S
x86: Prepare asm files for straight-line-speculation
2022-05-15 20:18:49 +02:00
sev-shared.c
x86/sev: Check for user-space IOIO pointing to kernel space
2023-10-25 11:58:55 +02:00
sev.c
x86/sev: Check IOBM for IOIO exceptions from user-space
2023-10-25 11:58:55 +02:00
signal_compat.c
signal: Deliver SIGTRAP on perf event asynchronously if blocked
2022-06-09 10:22:48 +02:00
signal.c
x86/init: Initialize signal frame size late
2023-08-08 19:58:31 +02:00
smp.c
x86/reboot: Disable SVM, not just VMX, when stopping CPUs
2023-03-10 09:40:01 +01:00
smpboot.c
x86/smp: Use dedicated cache-line for mwait_play_dead()
2023-07-05 18:25:05 +01:00
stacktrace.c
stacktrace: Move documentation for arch_stack_walk_reliable() to header
2021-03-10 15:52:31 +01:00
static_call.c
x86/static_call: Fix __static_call_fixup()
2023-08-26 14:23:40 +02:00
step.c
ptrace: Reimplement PTRACE_KILL by always sending SIGKILL
2022-06-09 10:22:29 +02:00
sys_ia32.c
…
sys_x86_64.c
x86/mm: Cleanup the control_va_addr_alignment() __setup handler
2022-06-09 10:22:54 +02:00
tboot.c
x86/boot/tboot: Avoid Wstringop-overread-warning
2021-03-23 00:16:13 +01:00
time.c
…
tls.c
x86/stackprotector/32: Make the canary into a regular percpu variable
2021-03-08 13:19:05 +01:00
tls.h
…
topology.c
x86: Fix various typos in comments
2021-03-18 15:31:53 +01:00
trace_clock.c
…
trace.c
trace/osnoise: Fix 'no previous prototype' warnings
2021-06-28 14:12:26 -04:00
tracepoint.c
…
traps.c
x86/CPU/AMD: Fix the DIV(0) initial fix attempt
2023-08-26 14:23:40 +02:00
tsc_msr.c
…
tsc_sync.c
x86/tsc: Add a timer to make sure TSC_adjust is always checked
2021-12-08 09:04:56 +01:00
tsc.c
x86/tsc: Disable clocksource watchdog for TSC on qualified platorms
2021-12-08 09:04:56 +01:00
umip.c
x86/insn: Extend error reporting from insn_fetch_from_user[_inatomic]()
2021-06-15 11:39:30 +02:00
unwind_frame.c
…
unwind_guess.c
…
unwind_orc.c
x86/unwind/orc: Fix unreliable stack dump with gcov
2022-11-03 23:59:16 +09:00
uprobes.c
uprobes/x86: Allow to probe a NOP instruction with 0x66 prefix
2022-12-31 13:14:04 +01:00
verify_cpu.S
x86: Prepare asm files for straight-line-speculation
2022-05-15 20:18:49 +02:00
vm86_32.c
signal: Replace force_fatal_sig with force_exit_sig when in doubt
2021-11-25 09:49:07 +01:00
vmlinux.lds.S
x86/retpoline,kprobes: Fix position of thunk sections with CONFIG_LTO_CLANG
2023-08-26 14:23:40 +02:00
vsmp_64.c
…
x86_init.c
x86/rtc: Remove __init for runtime functions
2023-04-20 12:13:56 +02:00